Year	% of GNI
2009	3.20747334262674
2010	2.97352486773898
2011	3.1037318944545
2012	2.83101081244359
2013	2.7936271650952
2014	2.71656264200805
2015	2.57155003850241
2016	2.46152507445241
2017	2.33247295064515
2018	2.20936936088929
2019	2.07635233784877
2020	2.13937881110499